| 摘要 |
1,102,817. Bag tubes. OLIN MATHIESON CHEMICAL CORPORATION. 18 Feb., 1965 [4 March, 1964], No. 7111/65. Heading F2P. [Also in Division B5] A multi-wall tubular sack (Fig. 4) comprises three tubular webs of kraft paper 43, 44 and 46 and an inner composite ply 48 comprising a kraft paper web 48 and a polyethylene film 49 bonded together by an adhesive pattern represented by cross-hatching 51, the width of the lines of adhesive and the spacing thereof relative to one another being so selected and arranged that the lines of adhesive cover no more than 5% of the total area of the interface of the ply. |
